EP 0670153 B1 19981223 - Methods and apparatus for making multi-layer absorbent products
Title (en)
Methods and apparatus for making multi-layer absorbent products
Title (de)
Verfahren und Vorrichtung zum Herstellen von mehrschichtigem, absorbierenden Erzeugnissen
Title (fr)
Procédé et appareil pour la production de produits absorbants multicouches
Publication
Application
Priority
US 20412794 A 19940302
Abstract (en)
[origin: EP0670153A1] Improved method and apparatus for forming absorbent products and the improved absorbent products formed thereby are disclosed. In a first embodiment of the present invention, a rotary die (100) is used to cut ellipsoidal and hyperbolic-shaped portions (52, 54) from a single sheet of material (50) and these shapes are overlaid to form an absorbent structure. The shapes are chosen such that there is no waste of the material and yet the resulting absorbent structure is of a useful shape. Methods are also disclosed whereby two sets of rotary dies are used to simultaneously cut two sheets of material into an arcuate segment and the arcuate segments are overlaid atop each other to form useful absorbent structures. In either embodiment, powders such as superabsorbents may be added to one or more of the surfaces of the components used to construct the absorbent structures. <IMAGE>
IPC 1-7
IPC 8 full level
A61F 13/49 (2006.01); A61F 13/15 (2006.01); A61F 13/472 (2006.01); B26D 11/00 (2006.01); B26F 1/38 (2006.01)
CPC (source: EP US)
A61F 13/15723 (2013.01 - EP US); A61F 13/15747 (2013.01 - EP US); A61F 13/472 (2013.01 - EP US); B26D 11/00 (2013.01 - EP US); B26F 1/384 (2013.01 - EP US); A61F 13/53409 (2013.01 - EP US); A61F 2013/1591 (2013.01 - EP US); A61F 2013/15918 (2013.01 - EP US); A61F 2013/4568 (2013.01 - EP US); A61F 2013/4708 (2013.01 - EP US); A61F 2013/49082 (2013.01 - EP US); A61F 2013/530007 (2013.01 - EP US); A61F 2013/530255 (2013.01 - EP US); A61F 2013/530299 (2013.01 - EP US); A61F 2013/53051 (2013.01 - EP US); A61F 2013/53445 (2013.01 - EP US); A61F 2013/8408 (2013.01 - EP US); A61F 2013/8414 (2013.01 - EP US); Y10T 156/1051 (2015.01 - EP US); Y10T 156/1074 (2015.01 - EP US); Y10T 156/1075 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0670153 A1 19950906; EP 0670153 B1 19981223; AT E174781 T1 19990115; AU 1359495 A 19950907; AU 680985 B2 19970814; CA 2143803 A1 19950903; CA 2143803 C 20060620; DE 69506751 D1 19990204; DE 69506751 T2 19990722; DK 0670153 T3 19990823; ES 2125502 T3 19990301; GR 3029429 T3 19990528; HK 1012546 A1 19990806; JP H07313548 A 19951205; MY 111982 A 20010331; NZ 270582 A 19970224; PH 31502 A 19981103; SI 0670153 T1 19991231; TW 276989 B 19960601; US 5562793 A 19961008
DOCDB simple family (application)
EP 95102914 A 19950301; AT 95102914 T 19950301; AU 1359495 A 19950302; CA 2143803 A 19950302; DE 69506751 T 19950301; DK 95102914 T 19950301; ES 95102914 T 19950301; GR 990400512 T 19990217; HK 98114027 A 19981218; JP 6671095 A 19950302; MY PI19950531 A 19950301; NZ 27058295 A 19950227; PH 50047 A 19950103; SI 9530229 T 19950301; TW 84104297 A 19950501; US 45244995 A 19950526